SimuVox

SimuVox is physics-based speech synthesis software designed for clinical assessment of voice disorders. It enables clinicians, researchers, and educators to simulate and study abnormal voices with irregular pitch, loudness, or timbre that often stem from laryngeal pathologies or physiological dysfunctions.

Unlike traditional voice synthesis methods, SimuVox uses biomechanical and aerodynamic models to create realistic voice simulations with direct control through physiological parameters.

Windows executable · Released July 2023

Features

• Vocal Fold Modeling — Asymmetric left/right tissue properties for realistic pathological simulation
• Glottal Aerodynamics — Fluid dynamics-based airflow modeling
• Acoustic Wave Propagation — 44-tube vocal tract model including trachea, bronchi, nasal tract, and paranasal sinuses
• Disorder Simulation — Muscle jitter, tremor, and aspiration noise
• Articulatory Control — Jaw, tongue, lips, and larynx position
• Physiological Parameters — Clinically meaningful control variables

Awards

• First Place (2021) and Second Place (2017) — Prize "Paulo Pontes" of the Brazilian Chapter of The Voice Foundation
• Prizes for Excellence (2013, 2015) and Honorable Mention (2016, 2020) — Brazilian Society of Speech-Language Pathology and Audiology

Citation

Funding

SimuVox development was supported by:

• CNPq-FRS/FNRS Brazil-Belgium cooperation program with Jean Schoentgen at Université Libre de Bruxelles (2012–2014)
• CNPq grant (2015–2018) in collaboration with Mara Behlau's team at the Center of Voice Studies of São Paulo